We are designing PCB based on Cyclone 10 GX device. There are total 12 channel tranceivers on this FPGA. We refer to its PCI-e demo board, howver, we found that the traces don't have AC coupling capacitors of XCVR (RX&TX) between FPGA and SFP. Do we need to add AC coupling capacitor for our board when we use fpga interconnecting with SFP?

Hi,coupling capacitors are located in SFP module by specification SFF-8431.

How to route XCVR IO from Cyclone10GX to SFP

FvM
Super Contributor
2 years ago
Hi,
coupling capacitors are located in SFP module by specification SFF-8431.
Wincent_Altera
Regular Contributor
2 years ago
Hi Fvm, thanks for help to answer on behave

Hi Ming Zhi,

I wish to follow up with you about this case.
Do you have any further questions on this matter ?
Else I would like to have your permission to close this forum ticket

Regards,
Wincent_Intel
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Wincent_Altera
Regular Contributor
2 years ago
Hi

We have not hear from you and this Case is idling. It is not recommended to idle for too long.
Therefore following our support policy, I have to put this case in close status. My apologies if any inconvenience cause
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p/s: If any answer from the community or Intel Support is helpful, please feel free to give the best answer or rate 9/10 survey.